PARALLEL AND SERIAL PROCESSES IN MOTION DETECTION
PARALLEL AND SERIAL PROCESSES IN MOTION DETECTION
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DOI：
10.1126/science.3603025
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发表时间：
1987-07-24
期刊：
影响因子：
56.9
通讯作者：
SAGI, D
中科院分区：
文献类型：
--
作者：
DICK, M;ULLMAN, S;SAGI, D
视在运动被用来探索人类感知视野中运动方向的能力。一个显着的质的差异，这种能力被发现之间的短期和长期的运动。对于短距离运动，运动方向的检测的特征在于在宽视场上的并行操作（即，检测性能与阵列中的对象的数量无关）。当位置位移相对于对象的尺寸较大时，以串行方式检测运动方向。在这种情况下，检测过程受到检测其他事件的能力的限制，例如对象的出现和消失，以及计算它们的时空关系的能力。结果是一致的，与以前建议的运动检测系统分为短期和长期的过程。短距离运动的方向可以被平行地感知（前注意力），而长距离运动是注意力集中的，需要更复杂的计算。长距离运动的检测似乎是一个联合任务，结合了消失和出现的检测。
Apparent motion was used to explore humans' ability to perceive the direction of motion in the visual field. A marked qualitative difference in this ability was found between short- and long-range motion. For short-range motion, the detection of the direction of motion is characterized by parallel operation over a wide visual field (that is, detection performance is independent of the number of objects in an array). When the positional displacement is large relative to an object's size, the direction of motion is detected in a serial manner. The process of detection is limited in this case by the ability to detect other events, such as appearance and disappearance of an object, and the ability to compute their spatio-temporal relations. The results are consistent with a previously suggested division of the motion detection system into short- and long-range processes. The direction of short-range motion can be perceived in parallel (preattentively), whereas long-range motion is attentive and requires more complicated computations. It seems that the detection of long-range motion is a conjunction task, combining the detection of disappearance and appearance.